Display : 

Retina HD display with 3D Touch
4.7-inch (diagonal) widescreen LCD Multi-Touch display with IPS technology
1334-by-750-pixel resolution at 326 ppi
1400:1 contrast ratio (typical)
500 cd/m2 max brightness (typical)
Full sRGB standard
Dual-domain pixels for wide viewing angles
Fingerprint-resistant oleophobic coating on front
Support for display of multiple languages and characters simultaneously
Display Zoom
Reachability

Camera:

12-megapixel camera
Live Photos with stabilization
Autofocus with Focus Pixels
Optical image stabilization (iPhone 6s Plus only)
True Tone flash
Panorama (up to 63 megapixels)
Auto HDR for photos
Exposure control
Burst mode
Timer mode
ƒ/2.2 aperture
Five-element lens
5x digital zoom
Hybrid IR filter
Backside illumination sensor
Sapphire crystal lens cover
Auto image stabilization
Local tone mapping
Noise reduction
Face detection
Photo geotagging

Video Recording:

4K video recording at 30 fps
1080p HD video recording at 30 fps or 60 fps
720p HD video recording at 30 fps
Optical image stabilization for video (iPhone 6s Plus only)
True Tone flash
Slo-mo video support for 1080p at 120 fps and 720p at 240 fps
Time-lapse video with stabilization
Cinematic video stabilization (1080p and 720p)
Continuous autofocus video
Noise reduction
Take 8-megapixel still photos while recording 4K video
Playback zoom
3x digital zoom
Face detection
Video geotagging

FaceTime HD Camera:

5-megapixel photos
720p HD video recording
Retina Flash
ƒ/2.2 aperture
Auto HDR for photos and videos
Backside illumination sensor
Exposure control
Burst mode
Timer mode
Face detection

Touch ID : Fingerprint sensor built into the Home button